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(No Model.)

T. & R. W. BOWER & J. BLACKBURN. MACHINE FOR CUTTING GOAL.

No. 399,485. Patented Mar. 12, 1889.

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N. PETERS. Phuwmhugmphur. wnmingm D. C.

UNiTED STATES lPATENT OFFICE.

'lll(`),\liS ll(')\\'ER, Oli HULL, Rt'jlEty lYILLlAM DOH'ER, OE LEEDS, AND JAMES .IELA(\BVRN, OE YOODLESFORD, COUNTY F YORK, ENGLAND.

MACHINE FR CUTTING COAL,

SPECIFICATION forming part of' Letters Patent No. 399,485, dated March 12, 1889.

Application tiled July 5, 1888. Serial No. 279,145. (No model.) Patented in England May 26, 1887, No. 7,662, and December 9, 1887,1To. 16,955.

To all whom if may concern:

l for impart ingx motion tior the purpose ot cuto Be 'it known that we, THoMAs 3o wien, lionting; coal the motor hasheen constructed sep- ERT WiLLLin Bowen, and JAMES BLAGK- araie and distinct from the coalcuttiiig nia BURN, ot' Hull, Leeds, and `llloocllestoid, rechine,andtheinachinehasheensoconstructed 5 spectively, all iii the county ot' York, Engthat: the motor could either he placed thereon land,have invented new and usei'ul Improvc- 1 and engage therewith by means of suitable 55 i ments in Machines or Apliaratus for Cutting' gearing or wheels through which therequired Coal, (ti'or certain ot' which iinprovijfiiients a motion is transmitted to the machine, or the patent was granted to us and to l `rederiek i motor, when preferred, could he placed'at any io Mori in (treat lritain, iflateifl )lay 26, 1.967, l snitahle distance t'roin the machine andino- No. Tami, and t'or certain other oli' which iinl tion transmitted to such machine hv rope, 6o proveineiits a patentJ was granted to'us in heli, or other ordinary means. i

Great Britain, dated December i), 1397, No. Now in our improvements we dispense with 1G,l55,) of which the followingl is a tnll,elear, the coal-cutting machine hitherto employed, i 5 and exact description. and impart the required rotary motion te the The obj ect of our inrentioii .is to improve Cutter-har directtrom the motor-shaft, saving` the construction of the cutters employed 'for therehy considerable expense. .At the same cutting coal, and also refers to the employtime the work is quicker and more perfectly ment oit' an electric motor for imparting,` mot accomplished.

'- 2o tion to the same. In the drawings, at, Figs. 2 and 3, we have In the accompanying drawings, Figure l is shown an lmmisch7 motor, D, mounted on a 7o a longitudinal section of cutter. Fig. 2 is turn-table, E, carried on the bed-plate F, the a side elevation, and Fig. Z a plan, looking` whole heine' mounted upon wheels or runners at the top, showingl cutters attached to mo- G. The motor-shaft H has provided on the 2 5 tor-shaft direct. end of it a coupling-plate, I, corresponding lfe construct; the cutters i n such a form with another coupling-plate, J, provided on that they can he more readily withdrawn from the cutter bar or shaft A. The shaft A or har the work, at the same time causing' less waste con taining` the cutters B is coupled to the inooi coal during; the cutting operation. For tor-shaft ll hy mea-iis of the aforesaid coup- 5o these purposes we make the cutter-har A of t ling-plates l and .l and bolts K, or by other ataperforni toward its outer extremity. The suitable means. The required rotary inove- So cutters B, also, which we employ are `sgradment is `eivcn to the turn-table E, on which ually reduced in size, assuming', also, a` taper the motor D rests, h v means ot a` worin, L,

' torni, as shown in the accompanying' drawmounted on a shaft, M, supported in hea-rings 3 5 ings. The hase of the cutters ll may he ol' a N on the licd-plate F and worin-wheel seg polygonal torni, as shown, and into these are ment O, provided on tlierini of the turn-table screwed or otherwise fastened diamond E. By this mcansthe cutter-liar can he moved shaped or pointed steel hits c, or suoli steel along h v the attendant; as the coal is heilig hits may he cast in one with the polygonal cut,- cut and the proper feed given thereto.

4o ters. Dy these improvements not only is the lrdinary means are employed for regularout or opening;I made inthe coal of a less area, ing the speed oi the motor for the purpose ot 9o hut also the slightest` movement ot the cutvarying' or adjusting' the speed ot the cutterters releases them troni the surface. `We har. would have Ait understood that the aforesaid Although we have shownou r improvements .4, 5 taper cutter-har a nd cutters are equally apapplied to an Iinniisch motor, we would have plicahle to other coal-cutting1 apparatus havit understood that they are also applicable to 95 ing` similar motions to those hereinafter dcl other electric motors having` a similar rotaryT 'n scribed. t motion.

Hithertowhenelectricityhasleen employed i To claim as our inventionl. In a machine for cutting Coal, a cutter Consisting of a tapering bar, A, provided with cutters or pieces B, of polygonal form, having diamond-shaped or pyramidal steel bits C secured thereto, substantially as and for the purpose herein described.

2. In a machine for cutting Coal, the conibination, with the tapering entterbar or shaft l A, provided with the coupling-plate J, of the motor D, having' its shaft H provided with the coupling-plate I, whereby motion is transmitted direct from. the motor-shaft, substantially as herein described.

3. In a mining-machine, the combination,

with a laterally-moving carriage, of an eleotrie motor mounted thereon, and a cutter-bar ,l

vided With diamond-shaped pointed steel projeetions, substantially as set forth.

THOMAS BOWER. ROBERT VILLIAM BOVER. JAMES BLACKBURN. Witnesses:

T. GREENWOOD TEALE, J. IV. HARDING. 

